284 SCIyTSNIU-K. 



7. SCI-ENA*. 



Scisena, sp., (Artech) Cicv. Rhjne Anini. ; Cue. S^- VaJ- v. p. 28. 

 Johnius, Bl. Schn. p. 74; Cuv. .§' Val. v. p. 115. 

 Leiostomus, Cuv, ^ Val, v. p. 140. 

 Homoprion. Holhr. Ichth, S. Carol, p. 108. 



Body oblong ; eye of moderate size ; the space betwceir the eyes 

 moderately broad and slightly convex ; muzzle convex, with the 

 upper jaw overlapping the lower or with the jaWs equal in length, 

 and with the cleft of the mouth horizontal, or slightly oblique. The 

 outer series of the jaws generally contains larger teeth ; never lai'ge 

 canines. No barbel. The second spine of the anal more or less 

 indistinct. Pseudobranchiae ; aii'-bladder with appendages. Pyloric 

 appendages in small number. 



Mediterranean ; Atlantic ; East Indian Seas ; coast of California ; 

 fresh waters of North and South America. 



1 . Scisena amazonica. 



Johnius amazonieus, Castelnau, Anim. noiiv. ou rnres de TAindr. dii 

 Sud, Pom. p. 12. pi. 4. f. 1. 



D. lol -I-. A. |. L. lat. lOOf. L. transv. ^. Vert. 12/13, 



I 33-34 6 20 ' 



The height of the body is four times in the total length, the length 

 of the head 3| ; the diameter of the eye is one-sixth of the latter. 

 The snout is slightly convex, with the jaws nearly equal in front, 

 and 1^ as long as the eye. The upper maxillary reaches to the level 

 of the posterior margin of the orbit. The praeoperculum has the 

 angle produced behind and very indistinctly denticulated ; operculum 

 with two points. Caudalis rhomboidal ; the second anal spine rather 

 feeble, its length being 4| in that of the head. Dorsal and caudal 

 fins with blackish margins ; axil blackish. 



Rivers of Brazil. 



a. Fine specimen. S. America. Presented by Sir R. Schomburgk. 



b. Fine specimen. River Capin (Para). Purchased of Mr, Stevens. 



c. Adult: skeleton. River Capin. Purchased of Mr. Stevens. 



d. Half-groAvn. Capin. Purchased of Mr. Stevens, 



e. Adidt, From the Collection of the Zoological Society, 

 Sl-eleton. — Three portions may be distinguished in the maxillary 



bone : the basal portion, with a superior articular ca\dty for the pro- 



* 1. Corvina? albiflora, Rich. Ichth. Chin. p. 226. — China. 



2. Johnius resplendens, Hombr. 8f Jacq. Poiss. Voy. Pole Sud, p. 45. pi. 5, 



f. l.—Hab. ? 



3. Scirena (?) rubella, Natur. Libr. Fishes of Guiana, "li. p. 133. — Rivers of 



Guiana. 



4. Corvina grunnicns, Natur. Libr. Fishes of Guiana, ii. p. 13G. pi. 2. — 



Essequibo. 

 f). Scia;na crocea, Richards. Ichth. Chin. p. 224. — Chinese Seas. — The epe- 

 cimen, mentioned by Sir J. Richardson as in the British Museum, is 

 not to be found in that collection, 

 t The scales of the lateral line being much larger than the others, this num- 

 ber gives that of the transverse rows above and below the lateral line. 



